Expect to spend $100-$400 for a voiceover session. (For a lower price point, look at Fiverr, but if you have more room in your budget, check out a voice acting agency.) The average professional studio session from start to finish will take approximately two hours, depending on how many scripts you have to record and how prepared you are.
But every once in a while, you get a really special voicemail. Maybe your partner called you early in the morning, knowing you were asleep, to leave a Happy Birthday recording for when you awoke. Or maybe a beloved family member recently passed away, and you have a voicemail from them that might’ve seemed pretty pointless at the time but now carries extra significance.

I like to say my phone number very early so the person can hear it again quickly by starting the message over and does not have to listen to your entire message again to hear the number. But do repeat your telephone number at the end of the message at least once and speak very s-l-o-w-l-y so the person can write it down as they listen. If you don't get a response to your first voicemail, don't hesitate to record a similar message once a week for two or three weeks. This sounds a bit excessive, but my experience has been that if there is even the slightest chance of meeting someone now or even in the near future, this kind of message will get their attention.
The unavailable message is the standard greeting callers hear when they reach your voicemail box. It is the greeting that you can use consistently throughout the work year.